Hytronik HMW20 Occupancy Sensor

A top end recessed microwave motion sensor with daylight threshold measurement for energy efficiency.
This sensor can handle up to 1200watts of halogen or 400 watts of LED lighting.
The setting is using the HRC-11 remote control to allow easy setting without the need to access the ceiling.
The outer bezel is 85mm diameter so a hole size of 70mm is good.
There is a large detection range as standard of around 6m. The detection range is then variable to achieve the desired sensitivity.
Also the hold time which gives the amount of time the light is left on after movement is variable from 2 seconds to 30 minutes.
There is an Absence Detection function set by the remote, whereby the light is only activated when a push switch is depressed and then stays on automatically assuming there is a presence within the space.
The daylight threshold can be set between 2 Lux and 500 Lux so the lights will only be activated above this threshold for energy saving.